The influence of the number and the type of magnetic attachment on the retention of mandibular mini implant overdenture
Identifieur interne : 000031 ( Main/Exploration ); précédent : 000030; suivant : 000032The influence of the number and the type of magnetic attachment on the retention of mandibular mini implant overdenture
Auteurs : Eunjee Lee [Corée du Sud] ; Soo-Yeon Shin [Corée du Sud]Source :
- The Journal of Advanced Prosthodontics [ 2005-7806 ] ; 2017.
Abstract
The aim of this study was to compare the retention of mini implant overdenture by the number, the type of magnetic attachment, and the directions of applied dislodging force.
The experimental groups were designed by the number and type of magnetic attachment. Twenty samples were tested with Magden implants. Each attachment was composed of the magnet assembly in overdenture sample and the abutment keeper in a mandibular model. Dislodging forces were applied to the overdenture samples (50.0 mm/min) in 3 directions. The loading was repeated 10 times in each direction. The values of dislodging force were analyzed statistically using SPSS at 95% level of confidence.
The retentive force of group 2 was greater than that of group 1 in both types of attachment in every direction (
Proper retentive properties for implant overdenture were obtained, regardless of the number and type of magnetic attachment. In both types of magnetic attachment, the greater retentive force was attained with more implants. Oblique retentive force of flat type magnetic attachment was greater than that of cushion type. Among all subgroups, anterior-posterior retentive force was the lowest among three different directions of dislodging force.
Url:
DOI: 10.4047/jap.2017.9.1.14
PubMed: 28243387
PubMed Central: 5321584
Affiliations:
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<author><name sortKey="Lee, Eunjee" sort="Lee, Eunjee" uniqKey="Lee E" first="Eunjee" last="Lee">Eunjee Lee</name>
<affiliation wicri:level="1"><nlm:aff id="A1">Department of Prosthodontics, College of Dentistry, Dankook University, Cheonan, Republic of Korea.</nlm:aff>
<country xml:lang="fr" wicri:curation="lc">Corée du Sud</country>
<wicri:regionArea>Department of Prosthodontics, College of Dentistry, Dankook University, Cheonan</wicri:regionArea>
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<author><name sortKey="Shin, Soo Yeon" sort="Shin, Soo Yeon" uniqKey="Shin S" first="Soo-Yeon" last="Shin">Soo-Yeon Shin</name>
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<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">The influence of the number and the type of magnetic attachment on the retention of mandibular mini implant overdenture</title>
<author><name sortKey="Lee, Eunjee" sort="Lee, Eunjee" uniqKey="Lee E" first="Eunjee" last="Lee">Eunjee Lee</name>
<affiliation wicri:level="1"><nlm:aff id="A1">Department of Prosthodontics, College of Dentistry, Dankook University, Cheonan, Republic of Korea.</nlm:aff>
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<author><name sortKey="Shin, Soo Yeon" sort="Shin, Soo Yeon" uniqKey="Shin S" first="Soo-Yeon" last="Shin">Soo-Yeon Shin</name>
<affiliation wicri:level="1"><nlm:aff id="A1">Department of Prosthodontics, College of Dentistry, Dankook University, Cheonan, Republic of Korea.</nlm:aff>
<country xml:lang="fr" wicri:curation="lc">Corée du Sud</country>
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<series><title level="j">The Journal of Advanced Prosthodontics</title>
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<front><div type="abstract" xml:lang="en"><sec><title>PURPOSE</title>
<p>The aim of this study was to compare the retention of mini implant overdenture by the number, the type of magnetic attachment, and the directions of applied dislodging force.</p>
</sec>
<sec><title>MATERIALS AND METHODS</title>
<p>The experimental groups were designed by the number and type of magnetic attachment. Twenty samples were tested with Magden implants. Each attachment was composed of the magnet assembly in overdenture sample and the abutment keeper in a mandibular model. Dislodging forces were applied to the overdenture samples (50.0 mm/min) in 3 directions. The loading was repeated 10 times in each direction. The values of dislodging force were analyzed statistically using SPSS at 95% level of confidence.</p>
</sec>
<sec><title>RESULTS</title>
<p>The retentive force of group 2 was greater than that of group 1 in both types of attachment in every direction (<italic>P</italic>
< .05). Oblique retentive force of flat type magnetic attachment was higher than that of cushion type attachment in both groups (<italic>P</italic>
< .05). In group 1, oblique retentive force showed the highest and anterior-posterior retentive force showed the lowest value in both attachment types (<italic>P</italic>
< .05). In group 2, both types of attachment showed the lowest retentive force with anteriorposterior direction of dislodging force (<italic>P</italic>
<.05).</p>
</sec>
<sec><title>CONCLUSION</title>
<p>Proper retentive properties for implant overdenture were obtained, regardless of the number and type of magnetic attachment. In both types of magnetic attachment, the greater retentive force was attained with more implants. Oblique retentive force of flat type magnetic attachment was greater than that of cushion type. Among all subgroups, anterior-posterior retentive force was the lowest among three different directions of dislodging force.</p>
</sec>
</div>
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